20303223 has 4 divisors (see below), whose sum is σ = 27070968. Its totient is φ = 13535480.

The previous prime is 20303203. The next prime is 20303249. The reversal of 20303223 is 32230302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20303223 - 2⁸ = 20302967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3383868 + ... + 3383873.

It is an arithmetic number, because the mean of its divisors is an integer number (6767742).

Almost surely, 2^20303223 is an apocalyptic number.

20303223 is a deficient number, since it is larger than the sum of its proper divisors (6767745).

20303223 is an equidigital number, since it uses as much as digits as its factorization.

20303223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6767744.

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 20303223 is about 4505.9097860477. The cubic root of 20303223 is about 272.8066765866.

Adding to 20303223 its reverse (32230302), we get a palindrome (52533525).

It can be divided in two parts, 2030 and 3223, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 20303223 in words is "twenty million, three hundred three thousand, two hundred twenty-three".